in 1926, a geologist named alfred wegener brought a new idea to the scientific community, but they laughed and called it ridiculous. the idea turned out to have great merit. what was it?
Alfred wegener wrote a paper in the early 20th century outlining his theory that the continents were "drifting" across the Planet, occasionally crashing through oceans and into one another.
When did Wegener's idea ultimately gain scientific acceptance, and why?But, starting in the 1950s, information began to emerge that gave continental drift a better chance of being true. In order for Wegener's theory of continental drift to be recognized as the theory of plate tectonics, scientists needed to gather enough evidence to prove the existence of the missing process, namely, spreading, by the 1960s.
What are the two sources of support for Alfred Wegener's continental drift theory?Wegener's theory of continental drift was supported by fossil data. These species' fossils were discovered in locations that are now very distant from one another.
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Simplify 4/square root 12
4√22⋅3422⋅3
Pull terms out from under the radical.
4(2√3)4(23)
Multiply 22 by 44.
8√383
The result can be shown in multiple forms.
Exact Form:
8√383
Decimal Form:
13.85640646…13.85640646…
4√124122
The 4 / square root (12) can be simplified as 2 sqrt(3).
In mathematics, a square root of a number is a number time itself equals the original number. For example, the square root of 16 is 4 because
4 x 4 = 16.
solution,
First, we can simplify the numerator,
=2 ×2
= 4
Then, we can factor the square root of 12.
The prime factorization of 12 is
= 2 ×2 ×3,
so, the square root of 12 is
=2× sqrt(3).
Finally, we can multiply the numerator and denominator by sqrt(3),
which gives us
= 2 ×2 ×sqrt(3) / 2 ×sqrt(3)
= 2 sqrt(3).
Therefore, the simplified form of 4 / sqrt(12) is 2 sqrt(3).
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Suppose there were a Galilean moon closer to Jupiter than lo (but outside the Roche limit). It would be a. Have more seasonal variations than lo b. ripped apart by tidal stress c. less active than lo more active than lo d. Moving to another question will save this response.
If there were a Galilean moon closer to Jupiter than Io (but still outside the Roche limit), it would likely experience stronger tidal stress than Io. Tidal stress is the force exerted by a gravitational field on a celestial body, and it varies with distance. The closer a moon is to Jupiter, the stronger the tidal stress it experiences.
As a result, this moon would be ripped apart by the tidal forces exerted on it by Jupiter. The Roche limit is the distance at which a celestial body is no longer able to hold itself together due to tidal stress, and it is closer to Jupiter than the orbit of Io.
Therefore, a moon closer to Jupiter than Io would be well within the Roche limit and would be torn apart by the planet's gravitational forces. Because the moon would be destroyed, it would not have any seasonal variations or activity levels. It would simply cease to exist as a moon of Jupiter. Therefore, the answer to this question is b: ripped apart by tidal stress.
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Identify 1 enduring issue that can be associated with Mandela and support it with evidence.
One enduring issue associated with Nelson Mandela is the struggle for social justice and human rights. Mandela was a key figure in the fight against apartheid in South Africa and spent 27 years in prison for his activism. Even after his release, he continued to fight for equality and justice for all South Africans, regardless of their race or background.
One example of Mandela's commitment to social justice is the Truth and Reconciliation Commission (TRC) established in South Africa in 1995. The TRC was created to investigate human rights abuses committed during the apartheid era and to promote national unity and reconciliation. Mandela believed that in order to move forward as a nation, it was necessary to confront the injustices of the past and to hold those responsible accountable for their actions.
In his opening address to the TRC, Mandela stated: "Let us never forget that the cause of freedom and justice in this land has not yet been won. We have not yet reached our destination. But each one of us can point to a moment in our lives when we realised that we have the power to shape our destiny. The task before us now is to build on that power and do all that must be done to lift our country out of the mire of poverty, injustice and inequality."
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63 POINTS PLZZZZ HELP why was it necessary to limit the fishing ability in the Atlantic fishing grounds?
Tephrachronology is based on the idea that the products of individual ____________ are significantly different and thus distinguishable from one another.
Tephrochronology is based on the idea that the products of individual uses discrete layers of tephra are significantly different and thus distinguishable from one another.
In addition to the tephrochronology, tephra is being used by the variety of scientific disciplines that including geology, paleoecology the anthropology, and the paleontology, to date fossils, identify the dates within the fossils and also record, and learn about prehistoric cultures and the ecosystems.
Conventional methods for the tephra is to identification and primarily rely on the characteristic of the densities of the mineral and also the glass components of the volcanic ash to the separate shards from the host sediments
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deep sea trenches are associated with which type of boundary? responses transform boundaries transform boundaries convergent continent - continent boundaries. convergent continent - continent boundaries. convergent ocean - ocean boundaries. convergent ocean - ocean boundaries. divergent boundaries
Ocean trenches in particular are a characteristic of convergent plate borders, which occur where two or more tectonic plates collide.
Tectonic activity, which refers to the movement of the Earth's lithosphere, is what causes ocean trenches. Ocean trenches in particular are a characteristic of convergent plate borders, which occur where two or more tectonic plates collide. In a process known as subduction, dense lithosphere melts or slides beneath less dense lithosphere along numerous convergent plate borders, forming a trench. The hadalpelagic zone, the deepest part of the ocean, is where ocean trenches are located. Ocean trenches are among the planet's most unusual environments due to the hadalpelagic zone's high pressure, lack of sunlight, and chilly temperatures. How Subduction Zones Are Formed by Ocean Trenches The denser tectonic plate bends downward when its leading edge collides with that of a less dense plate.
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What are 2 benefits of
British rule?
What were 2 deficits of
British Rule?
Answer:
Improvement of government in the native states. Security of life and property. Services of educated administrators, who have achieved these results. Materially: Loans for railways and irrigation. Development of a few valuable products, such as indigo, tea, coffee, silk, etc
Explanation:
the steps in the formation of sedimentary rocks are listed below in an incorrect order: rocks are weathered. small pieces of rocks are carried by water. the sediments are compacted together. they are deposited in layers. which of these best shows the correct order of steps in the formation of sedimentary rocks
The first step in the formation of sedimentary rock is weathering of pre-existing rocks. The second step is transport of the weathering products. The third step is deposition of the material. And at the end there is compaction and cementation of the sediment to form a rock.
Sedimentary rocks are created on or very close to the Earth's surface, as opposed to igneous and metamorphic rocks, which are created very deep beneath the Earth. The most significant geological processes that result in the formation of sedimentary rocks are lithification, weathering, dissolution, and erosion. Sedimentary rocks are created when deposits of pre-existing rocks or fragments of extinct organisms build up on the surface of the Earth.
Rock fragments are carried to a basin or depression where silt is trapped after being weathered loose. Deep burial of the sediment causes it to become compressed and cemented, eventually producing sedimentary rock.
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Answer:
Explanation:
adaf
There is the most conclusive evidence for liquid water on Jupiter's moon lo O Europa O O O O salty water flowing through deep, eroded valleys. surface lakes in deep valley basins. precipitation from its dense atmosphere rich in water vapor. a subsurface ocean under a frozen crust in the form of
most conclusive evidence for liquid water is the subsurface ocean under a frozen crust on Jupiter's moon Europa. Scientists have long suspected the presence of water on Europa due to its smooth icy surface
The evidence for this subsurface ocean comes from observations of plumes of water vapor erupting from the surface of Europa, which suggest that there may be a connection between the ocean and the surface. Additionally, magnetic field data from the Galileo spacecraft indicate that Europa has a salty ocean beneath its surface, which is consistent with the idea of a subsurface ocean.
While there is some evidence for salty water flowing through deep, eroded valleys on Europa's surface, this is not as conclusive as the evidence for the subsurface ocean. Similarly, while there may be surface lakes in deep valley basins on Europa, this has not been confirmed.
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An alluvial plain is an area of dry desert land.
True
False
Answer:
FALSE is the correct answer for this question
Explanation:
A longer growing season is a result of
onring
which of the choices correctly describes three types of common cements in sedimentary rocks? which of the choices correctly describes three types of common cements in sedimentary rocks? calcite (which effervesces in dilute acid), silica (which produces the hardest sedimentary rocks), and iron (which gives rocks a reddish color) calcite (which effervesces in dilute acid), silica (which produces the hardest sedimentary rocks), and evaporites calcite (which gives rocks a reddish color), silica (which produces the hardest sedimentary rocks), and iron (which effervesces in dilute acid) silica (which produces the hardest sedimentary rocks), coal (which is high in carbon), and iron (which gives rocks a reddish color) calcite (which produces the hardest sedimentary rocks), silica (which effervesces in dilute acid), and iron (which gives rocks a reddish color)
The three types of common cements in sedimentary rocks are calcite (which effervesces in dilute acid), silica (which produces the hardest sedimentary rocks), and iron (which gives rocks a reddish color).
Cements play a significant role in the lithification (the process of turning sediment into rock) of sedimentary rocks. They fill the spaces between sediment grains and bind them together. The three types of common cements in sedimentary rocks are calcite, silica, and iron.
Calcite is a mineral form of calcium carbonate and is commonly found as a cementing agent in sedimentary rocks. It is known for its effervescence in dilute acid, which helps to identify its presence. Silica, in the form of quartz, is another common cement in sedimentary rocks. It has excellent cementing properties and can produce hard sedimentary rocks.
Iron is also a significant cementing material in sedimentary rocks. It occurs as iron oxide minerals, such as hematite or goethite, and imparts a reddish color to the rocks. Iron cementation is often observed in sedimentary rocks that have undergone weathering or in environments rich in iron minerals.
In summary, the correct choice is: calcite (which effervesces in dilute acid), silica (which produces the hardest sedimentary rocks), and iron (which gives rocks a reddish color). These three types of cements are commonly found in sedimentary rocks and contribute to their formation and characteristics.
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Can you guys help me I’ll give a crown
Answer:
F G B E C D A
Explanation: flip it around
Answer:
F G B E C D A
Explanation:
Two outcrops containing one index fossil each can only be matched up
if scientists also find a third outcrop containing
Answer:
both index fossils
Explanation:
Please help ASAP
WILL MARK BRAINLIEST
Describe the relation between agriculture and industries ?
Answer:
Industries and agriculture are interdependent i.e. they depend upon each other. The source of raw materials for industries comes from agriculture. For example: sugarcane for sugar industry, animal skin for leather industry, etc.
Question 4
7.5 pts
What nation fought and won with the Allied Powers in World War I but was overrun by Germany
early in World War II?
The two main processes by which sediment is produced are: a) physical and chemical weathering b) subduction and melting c) transportation and deposition, 1.
The two main processes by which sediment is produced are: a) physical and chemical weathering.
Sediment refers to the loose material that is transported and deposited by natural agents such as water, wind, and ice. It is a critical component of Earth's geologic cycle, as it provides important information about past environments and geologic events.
The two main processes by which sediment is produced are physical and chemical weathering.
Physical weathering, also known as mechanical weathering, involves the breakdown of rocks and minerals into smaller fragments through physical processes.
This can occur through a variety of mechanisms, including frost wedging, thermal expansion and contraction, and the action of plant roots. Frost wedging, for example, occurs when water seeps into cracks in rocks, then freezes and expands, causing the rock to break apart.
Chemical weathering, on the other hand, involves the breakdown of rocks and minerals through chemical reactions. This can occur through a variety of processes, including dissolution, oxidation, and hydrolysis.
Dissolution occurs when minerals are dissolved in water, such as when calcite in limestone dissolves in acidic rainwater. Oxidation occurs when minerals react with oxygen in the air, causing them to rust or change color.
Hydrolysis occurs when minerals react with water, which can cause them to break down and form new minerals.
Both physical and chemical weathering processes can produce sediment. The resulting sediment is typically composed of fragments of rock and mineral grains that are transported and deposited by natural agents such as rivers, glaciers, and wind.
The size and shape of sediment particles can provide important information about the processes that produced them and the conditions under which they were deposited.
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How far back in history would scientists need to use models to describe Earth's systems?
a) 1000 years
b)2500 years
c)5000 years
d)200 years
In order to model the Earth's systems, scientists would have to go back c. 5,000 years.
How far back do models on Earth go?Earth System Models are used to check the interactions between the biosphere and the atmosphere amongst others.
These systems go back 5,000 years because the Earth has been around for millions of years and there is a need to go as far back as possible.
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A(n) _____ is a structure in which beds dip away from a common central point, and the oldest rocks are found in the center.
A basin is a structure in which beds dip away from a common central point, and the oldest rocks are found in the center.
What is Basin?A basin is a depression in the ground that is lower than the surrounding landscape. A natural basin is caused by a low spot in the surrounding terrain. A structural basin is caused by geological formations like fault lines, and a sedimentary basin is caused by the accumulation of sedimentary rocks. Basins are huge, low-lying areas of Earth's crust where layers of sediment have gradually accumulated over millions of years. The word "basin" is often used to refer to a region with a low elevation, where rivers and streams flow into larger bodies of water like lakes or oceans.
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which deposits are the result of gravity-propelled currents that produce graded layers off sediment deposits?
the projected growth of african cities between 2010 and 2025 is attributed—
Both developed and developing countries are experiencing an increase in urbanization.
What were the attribution of Projects ?The proportion of the world's urban population is expected to rise from 47% in 2000 to around 57% by 2050. Large cities in developing countries will account for more than 90% of future population growth.
Africa has experienced the fastest urban growth in the developing world over the last two decades, at 3.5% per year, and this rate of growth is expected to continue into 2050.
According to projections, some African cities will account for up to 85% of the population between 2010 and 2025.
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why modern agriculture is important ? Long answer
Answer:
Agriculture is the main source of food, income, and employment of our country. ... Agriculture has been the highest priority because economic growth was dependent on both increasing the productivity of existing crops and diversifying the agricultural base for use as industrial inputs.
OR
Modern agriculture is an evolving approach with innovations in farming practices that helps in increasing agricultural efficiency and reduce the loss of natural resources. By applying this modern technology, farmers are gaining more profits and able to increase their productivity of field.
Some of the modern techniques like selected variety of hybrid seeds of a single crop; bio-fertilizers and bio-pesticides; technologically advanced equipment and energy subsidies in the form of irrigation water are commonly employed by the farmers. The sensors used to detect moisture in the soil help farmers to create irrigation systems for crops based on soil moisture and temperature. Working in low visibility field conditions like rain,dust and fog is possible with the help of modern technologies. Agricultural robots automate agricultural processes of fruit picking, crop harvesting, soil maintenance, irrigation, ploughing, planting, weeding and others. These robots automate slow and repetitive tasks for farmers to ensure focus on improving overall production yields. Land-augmenting technological changes involve technical, chemical and biological modifications to beintroduced in agriculture.
What ate all the rivers in North America and canda
Answer:
that sounds... dark.. unmmm
7. Do you think the number of Black-listed children in China under the Two-Child Policy
started in 2015 is higher or lower in 2022? Why?
Answer:
lower is the correct answer to this question
Volcanoes and earthquakes are most likely in this region of continental Europe.
a. Western Europe
b. Southern Europe
c. Northern Europe
d. Eastern Europe
Southern Europe is situated in the tectonically active Mediterranean region. Several of the region's volcanoes are still active, notably Mount Vesuvius in Italy, Mount Etna in Italy, and Mount Santorini in Greece.
Right to its location on the fault lines that separate the tectonic plates of Africa and Eurasia, Southern Europe is similarly vulnerable to earthquakes.
Western Europe is situated on a stable tectonic plate, it is less prone to experience earthquakes and volcanic eruptions.
Due to its location on a tectonic plate that is generally stable, Northern Europe also has a lower risk of experiencing earthquakes and volcanic eruptions.
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What are some important natural resources South American countries rely on for
international trade?
Answer:
Oil, natural gas, and petroleum products dominate the second group, while linseed oil, cotton, cattle hides, fish meal, wool, copper, tin, iron ore, lead, and zinc top the third group. South American manufactured goods have gained access to world markets as well.
liast two type of location
Answer:
ocean and ground
mars and sun
relative locations and absolute location
Explanation:
which of the following factors causes an explosive eruption from a composite volcano? question 19 options: a) mantle plumes b) large buildup of pressure from gases c) water accumulated in the vent d) pyroclastic flows
A composite volcano can erupt explosively when there is a significant accumulation of gas pressure. Option b is Correct.
Explosive eruptions are fueled by how much dissolved gas is present in the magma. To determine whether an eruption will be explosive or nonexplosive, the viscosity of the magma is also a crucial consideration. The pressure will continue to increase if there is a lot of gas trapped within the magma until it finally bursts violently from the volcano.
Similar to a bottle of carbonated soda, the gas in this situation is confined within the liquid but seeks to escape if the container is shaken. Less fluid and extremely explosive, the lava from a composite volcano is made up of a dense collection of minerals. Option b is Correct.
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